typescript/no-unnecessary-template-expression Suspicious

What it does

This rule disallows unnecessary template literals.

Why is this bad?

Template literals should only be used when they are needed for string interpolation or multi-line strings. Using template literals when a simple string would suffice adds unnecessary complexity.

Examples

Examples of incorrect code for this rule:

const str1 = `Hello world`;

const str2 = `42`;

const str3 = `true`;

// Template with only literal expressions
const str4 = `${"Hello"} ${"world"}`;

Examples of correct code for this rule:

const str1 = "Hello world";

const str2 = "42";

const str3 = "true";

// Template with variable interpolation
const name = "world";
const str4 = `Hello ${name}`;

// Multi-line string
const multiline = `
  Hello
  world
`;

// Template with expression
const str5 = `Result: ${1 + 2}`;

How to use

To enable this rule using the config file or in the CLI, you can use:

Config (.oxlintrc.json)

{
  "rules": {
    "typescript/no-unnecessary-template-expression": "error"
  }
}

CLI

oxlint --type-aware --deny typescript/no-unnecessary-template-expression

References

• Rule Source
• Rule Source (tsgolint)